Rotary pump



(No Modem f B. F. TABER.

ROTARYv PUMP. f

y No. 344,063, Patanted June 22,1886.

N PETERS. Phun-Lnbogrlphbf. Wallington, D. l2

" UNITED STATES BENJAMN F. TABER, F BUFFALO, NEV YORK.

PATENT OFFICE.

l, ROTARY PU M P.

SLDJEGIJEICATION-forming part o Letters Patent No. 344,63, dated June22I 1886l i Application tiled Jnnen, 1885. Serial No. 168,178. `(Nomodel.)

To @ZZ whom it may concern.-

Be it--known that I, BENJAMIN F. Tinne, of

the city of Buffalo, in the county ofErie and State of New York, haveinvented new and useful Improvements in Rotary Pumps, of

which the following is a specification.`

This invention relates to an improvement in that class of pumps whichconsists of a revolving cylinder arranged eccentricall y in theinclosing shell or case and provided kwith sliding pistons which`revolve with the cylinder and run with their outer edges in Contactwith the inclosing case.

in the several figures.

The object of this invention is to construct a simple and ecient pump ofthis kind which issuitable for pumping water and other liquids which donot interfere with the free sliding movements of the pistons in thecylinder.

My invention consists, to that end, of the improvements which will behereinafter fully set forth, and pointed out in the claims.

In the accompanying drawings, Figure l is a longitudinal `sectionalelevation ot' my improved pump. Fig. 2 is a vertical section at rightangles to Fig. 1. Fig. 3 is a perspective' view ofthe pistons.

` Like letters of reference 'refer to like parts A represents theinclosing shell or case of the pump, supported on asuitable hase-frame,

A', and provided with4 av suction-nozzle, I, and

a discharge-nozzle, c.

l D representsf'the pistonrylindcr, arranged eccentrically in the baseA, with its periphery in close contact with the abutment el of the gcase A, between the suction and discharge nozzles thereof.

E represents the sliding pistons,arrangedin grooves or ways e, formed inthe cylinder D at right angles to each other. Four pistons, E, areemployed andarranged each in ascparate groove or way, e. ltwo pairs atright angles to each other, so that the two pairs of grooves intersecteach other at the centerof thecylinder D. The pistons are similarlyarranged in pairs," so that ,the pistons of each pair bearwagainst eachother ,with their-inner 'portions and move with their outer portionsindependently, `each. in its own Way or groove e. Each piston consistsof an outer portion or plate, f, and arms j', proj ect-r ing inwardlytherefrom and separated by in The latter are arranged in y terveninosoaces. The arms of the two .b l. pistons forming a pair overlap eachother, or

rest upon each other, so that these arms remain in contact with eachother as the pistons slide in the cylinder D in adjusting themselves tothe case A, while each piston is not limited in its movement by theother piston of the same pair. The armsfof one pairof pistons passthrough the spaces between' the arms of 1 the other pair, as clearlyshown in Fig. 3. Each groove or way e is open in the periphery of thecylinder D where the plate f of the piston f lnoves in the groove e, andis closed at'the back or opposite end, as clearly shown at e in Fig. 2,whereby the pressure of the column ot' the liquid in the dischargepipeis removed from the backs of the pistons. When a piston has passed bythe abutment cl, it drops by gravity .until the outer edge of itsplatej'rests a-gainst'the inner surface of the shell A, andl thisdescending movement is facilitated by the absence of any considerablepressure on the pistons during this movement. The pistonsmove,therefore, in contact with the shell -without any considerablefriction, but are held iny contact withthe shell by gravity,suiiiciently close to insure the proper working of the pump in water andsimilar liquids which do notimpede the free movements of the pistons.

y represents the drivingsl1aft,formed on one end of the cylinder D, andh is the stufngbox, formed in theadjacent head H of iheshellk A, andembracing the shaft g. n

fl;l\ is the gland of the stuffing box, secured thereto in any suitablemanner, Iand provided on its outerend with a screw-threaded collar,

t', 'which receives an internally-threaded stuft'- ingnut, I. A suitablepacking, i. is interposed between thenut l and the collar t', to retainon the journal the oil which is introduced through lthe apertnreh.

K is a journal formed on the opposite end ofthe cylinder D.

l is a stuffingbox formed on the adjacent head J of the shell A, andembracing the journal K.

M is the gland of the stuffing-box Z, corr structed at its outer endwith a cap, m, which closes the. outervend of the gland and covers theouter en d of the journal K, whereby the escape of oil from the gland isprevented. As the journal Ey is the only ysupport of the cylinder D atthe end on which it is formed, it requires this extra protection againstrunning dry, While the shaft g, Which is supported in several bearings,is more easily7 kept properly lubricated.

It is obvious that the particular' form of the inelosing-shell isimmaterial, and also that the machine may be employed as a motor withoutmaterial change'in its construction.

I claim as my inventionl. The combination, with aninclosing shell, ofthe piston-cylinder D, provided with ways e. Open at the front andclosed at the rear, and sliding pist-ons E. constructed with overlappinginner arms, f', and arranged in the Ways e to drop by gravity afterpassing the abutment of the shell, and while being relieved from Athepressure of the column of liquid by the closedk backs of the ways e,substantially as set forth.

2. The combination, 'with an inclosing-shell, of the piston-cylinder D,provided with ways e. open at the front and closed at the rear, andpistons Reach composed of aplate,f, and inwardly-projecting armsf, saidpistons being arranged in pairs, with the arms f ofthe pistons of eachpair overlapping each other Without limiting the movements of eachother,

Vand the arms f of one pair passing through the spaces between the armsoi' the other pair, 3o

substantially as set forth.

Witness my hand this 4th day of June, 1885.

BENJ. F. TABER. VitneSSes:

J No. .T. BONNER, OSCAR ScHAUB.

Itis hereby certified that in Letters Patent No. 344,063, granted June22, 1886, upon the application of Benjznnin F. Taber, of Buffalo, NewYork, for an improvement in Rotary Pumps, an error appears in the printed specification requiring the following correction, viz: In line 84,page l, the word base should read case,- anrl that the Letters Patentshould be read with this correction therein to ina-ke it conform to therecord of the ease in the Patent Oee.

Signed, oountersigned, and sealed this 29th day of June, A. D. 1886.

[SEAL] D. L. HAWKINXS,

Acting Secretary of the Interior. Gountersigned:

M. V. MONTGOMERY,

Commissioner QI Patents.

